Age Tracker
This Add-ons allows users to track their precise age in years, months, days, hours, minutes, and seconds based on their birth date.
5 users
YouTube Rate
Give a rating to the videos which will appear on playlists, recommended, history, etc. and show the rating on the thumbnails.
5 users
YouTube Count-In
Simple count-in for YouTube made for musicians. Use Alt+C to start from current time or Alt+Shift+C to rewind to the beginning and start. Includes fully customizable BPM and beat count.
5 users
Spectra — Audio Visualizer
Turn any tab into a real-time audio visualizer. 32 canvas visualizers, 8 that react to your movement. No account, no configuration, and no data ever leaves your browser.
Tune Shifter
Adjust playback speed, volume, and add reverb effects to any audio or video on the current web page.
5 users
FlexiLingo – Video & Podcast Learning
Learn languages on YouTube, Spotify & BBC with interactive subtitles, word translations, and CEFR levels.
5 users
YouTube Player Enhancer
Make YouTube Feel Rich, like VLC — seekbar stays hidden on Space/arrow/volume keys, force 16:9 with vertical stretch slider, customize subtitle style. Perfect for keyframe hunting & distraction-free viewing.
5 users
BlendUz Token Helper
Captures your Qobuz user_auth_token from play.qobuz.com so linking BlendUz becomes a one-click copy.
5 users
SleepSafe Sound Audio Normalizer
Normalize stream audio for Twitch.tv, YouTube and other streaming sites. Streamer screaming while raging, hitting the desk or loud sound effects via TTS or music while you watch or sleep will automatically be toned down.
5 users
TuneDock for Spotify & Youtube
Control Spotify and YouTube from the Firefox sidebar or a floating widget. View what's playing and control playback, seek, volume, shuffle, repeat, device selection, and more — without leaving your current tab.
5 users
Fast Folders for Gemini - Chat folders and prompts
Quickly create, organise and access chat folders for Google Gemini.
5 users
Speedster - Video Speed Controller
A privacy-focused video speed controller for various video platforms. Just press the shortcut keys and see the magic!
5 users
Slow and Reverb for YouTube
Real-time speed and reverb controls for YouTube and YouTube Music.
5 users
Nova Tab - Stellar Dashboard New Tab
✨ Aurora new tab: 60+ widgets, 30+ games, notes, weather, clock, calculator, habits, paint & retro emulator.
5 users
Audio Controller by Niels
Controla el volumen de cada pestaña de forma independiente y amplifica el audio hasta un 300%. Ideal para videos, música, reuniones y streaming, con un control rápido, preciso y fácil de usar.
4 users
Lyric Finder
A fast and simple lyric finder that helps you find song by lyrics, discover music instantly, and use smart song identifier by lyrics features. This lyric search tool lets you type any phrase and quickly find music by lyrics with accurate song finder.
4 users
OS Features - Extension Edition
Enhance your Online Sequencer experience with a suite of custom themes, workflow fixes, and UI improvements.
4 users
Last.fm Artwork Upload Helper
Streamlines the process of uploading album artwork to Last.fm with visual missing artwork indicators, multi-source search, and direct one-click uploads.
4 users
TubePlus - YouTube Mix & Playlist URL Cleaner
Automatically removes playlist parameters from YouTube URLs and reloads the page
4 users
